The two-component mixture of Bose particles with short-range pairwise interaction at finite temperatures in three dimensions is considered. Particularly we examine, by means of the large-$N$ expansion technique, the stability of mixed state below the Bose-Einstein transition point and the temperature dependence of the condensate density for symmetric mixture of Bose gases. The presented analysis reveals the importance of finite-temperature excitations of the non-condensed particles in formation of the phase diagram of two-component Bose systems.

中文翻译：

---

有限温度下 Bose-Bose 混合物凝聚和稳定性的大 N 膨胀

考虑在有限温度下在三个维度上具有短程成对相互作用的 Bose 粒子的双组分混合物。特别地，我们通过大 N$ 膨胀技术检查了玻色-爱因斯坦转变点以下混合态的稳定性以及玻色气体对称混合物的冷凝密度的温度依赖性。所提出的分析揭示了非凝聚粒子的有限温度激发在双组分 Bose 系统相图形成中的重要性。